String a = "{
"colmdl":[{"field":"srrno"},
{"field":"loadport"}],
"suppressClipboardPaste":true,
"excelSheetName":"Grid_sheet",
"editable":true,
"excelExportType":"Toolbar"
}"
this is I stored in as a string , i need to set this as a map.
for ex colmdl,suppressClipboardPaste,excelSheetName,editable, excelExportType these all should be key.